!Neuropharmacology Clin Med Flashcards
What is a primary head ache
Benign disorder
What is a secondary headache
Sign of organic disease
What are the types of primary headaches
Migraine(with or without aura)
- chronic migraine
- tension type
- cluster
- post traumatic
- drug rebound
- trigeminal neuralgia
Headache history
How many types
Frequency
Pain
Prodrome (changes in energy levels, mood appetite, fatigue, muscle aches aura)
Associated symptoms-nausea, vomiting, anorexia, photophobia, photophobia, diarrhea, dizzy, behavior (retreat to dark, paces, rocks)
Previous medications tried
Medical/surgical history
Family history
Head ache exam
General examination (vitals, cardiac, extracranial, ROM C spine)
Neuro exam
Worrisome signs with headache
Worst HA
Onset after 50
Atypical for patent
Abrupt onset
Subacute with progressive worsening
Drowsi, confusion, memory
Weakness, ataxia, loss of coordination
- paresthesia/sensory loss/analysis
- abnormal medical or neuro exam
Diagnostic evaluation HA
Lab test, neurodiagnostic tests
What labs run with HA
CT, MRI/MRA, EEG, L.P. Arteriogram
-dental ENT allergy
As a general rule, HA patient should have a one-time, thurought neuro study
CT head with and without MRI of head
What do if have worrisome history or abnormal exam
Urgent imaging study and perhaps even and LP and arteriogram
CT can miss _% of subarachnoid hemorrhages and an LP may be needed if CT is normal
5-10%
What is difference between common and classic migraine
Common-no aura
Classic-aura
Intensity of common migraine
Moderate to severe
Disability common migraine
Inhibits or prohibits daily activities, pain aggravated by activity
Age onset common migraine
Late teens to early 20s
Prevalence peaks 35-40
Female:male ration for common migraine
3:1
Frequency common migraine
1-4 attacks per month (occasional) but 14 days or fewer per month
Duration common migraine
4 to 72 hours
Usually 12-24
Location common migraine
Unilateral or bilateral
Description common migraine
Throbbing/sharp/pressure
Prodrome common migraine
Mood changes, myalgia, food cravings, sluggishness, excessive yawning
Post drone common migraine
Fatigue, irritability, fog
Behavior common migraine
Retreat to dark, quiet room
Aura common migraine
None
_% of migraine sufferers don’t get aura
80-90
Associated symptoms of common migraine
Nausea, vomiting, photophobia, photophobia
Uncommon-diarrhea, conjunctival injection, stuffy nose, lacrimation, miosis, ptosis
Classic migraine
Aura (flashing lights or zig zag lines preceded migraine headache)
Aura lasts 15-30 minutes (scintillation, scotoma-often hemianopic)-but can be anything neurological
Chronic migrain
15 or more days per month, headache lasting 4 hours or longer, for a period of at least 3 months, not attributable to another disease
What causes migraines
Neurogenic inflammation
-trigeminal nerve becomes activated , releasing neuropeptides, causing painful neurogenic inflammation within the meninges, with subsequent effect on the dural vasculature (vasodilation, plasma protein extravasation, and mast cell degranulation)
Tension headache intensity
Mild to moderate
Tension HA disability
May inhibit but does not prohibit daily activities
Tension HA age of onset
Generally pear 20-40 years
Female to ace ration tension HA
3:2
Frequency tension HA episodic type
<15 days a month
Frequency tension HA chronic type
> 15 days a month?/ analgesic rebound HA, consider chronic migraine if intermittent migraines also present
Duration tension HA episodic
Several hours
Duration tensionHA chronic
All day, waxing and waning
Location tension HA
Bifrontal, bioccipital, neck, shoulders, band like
Description tension HA
Dull, aching, squeezing, pressure
Aura with tension HA
No
Behavior and tension HA
Not affected
Cluster HA intensity
Severe excruciating
Disability cluster HA
Prohibits daily activities
Age onset cluster HA
20s-50s
Female to male ration cluster HA
1:6
Cluster headache has recent association with __ _ _-
Obstructive sleep apnea
Cluster HA frequency episodic
1 or more a day for 6-8 weeks
Cluste HA frequency chronic
Several attacks per week without remission
Duration cluster HA
30 min-2 hr
Location cluster HA
100% unilateral, generally orbitotemporal
Pain of cluster HA
Non throbbing, excruciating sharp, boring, penetrating
Prodrome cluster ha
May include brief mild burning in ipsilateral inner canthus or internal nares
Aura cluster ha
No aura
Behavior cluster HA
Frenetic, pacing, rocking
Associated symptoms cluster HA
Ipsilateral ptosis, miosis, conjunctival injection, lacrimation, stuffed or runny nose
What triggers HA
Hormones, diet, stress, sensory stimuli
Hormones that trigger HA
Menses, ovulation, HRT, OC
Diet hat triggers HA
Alcohol , chocolate, aged cheese, MSG, aspartame, caffeine, nuts, nitrates/nitrites, citrus fruits, other
Changes that trigger migraine
Weather, seasons, travel, altitude, schedule, sleep patter, diet, skipping meals
Stress for HA trigger
Let down periods, intense activity, major life change/stress
Sensory stimuli of HA triggers
Bright or flickering lights odors
Acute treatment of migraine
OTC analgesics
NSAIDS-naproxen, ketorolac, diclofenac, isometheptene (midbrin), butalbital (fiorinal, fioricet)
Opoids-Demerol, morphine, codeine, oxycodone, hydrocodone
DHE nasal spray
Tristan’s
What are Triptans
5HT1 agonist
Name the triptans
Sumatriptan Zolmitriptan Naratriptan Rizatriptan Almotriptan Frovitriptan Sumatriptan Sumatriptan/long acting naproxen (treximet)
Triptans contraindicated in
Documented or strong risk factors for ischemic heart disease, other cardiovascular, cerebrovasculat or peripheral vascular disease, Raynaud syndrome, uncontrolled HTN, hemiplegic r basilar migraine, severe renal or hepatic impairment, use within 34 hours of tax with ergotamines, MAOIS or other 5HT1 agonists
Naratriptan dose
3.5 mg-one tablet at onset, may repeat 1 in 3 hr (max 10 mg in 24 hours)
Onset of action naratriptan
60 min
Benefits of naratriptan
Longest half life and fewest side effects
Contraindication for naratriptan
Patients with severe hepatic or renal impairment
Zolmitriptan dose
2.5,5 mg one at tablet onset HA may repeat 1 in 2 hours
Max 10 mg 24 hours
Onset action zolmitriptan
30-60 min
__ dose of solmitriptan recommended in patients with ___ impairment
Low hepatic
Sumatriptan dose
Up to 100 mg as a single dose and may repeat in 2 hours
Max 200 mg in 24
Onset 30-60min
Nasal spray sumatriptan
One spray at onset repeat 2 hours
Max 12 mg in 24 hours
Onset 10 min
Sumatriptan injection
One SQ at onset of MA, may repeat in 1 hr
Max 12 mg in 24 hours
Onset 10 min
Rizatriptan dose
One 5 or 10 mg tab at onset repeat in 24 hours
Max dose 20 mg in 24 hours
(Use 5 mg in patients on propranolol for max does of 10 in 24)
Almotriptan dose
12.5 mg tablets one at onset repeat 24 hours
Max 25 mg in 24 hours
Frovatriptan
2.5 tablet at onset repeat 1x in 24 hours
Max 7.5 in 24 hours
Frovatriptan
- 5 onset repeat two hours
7. 5 mg in 34 hours
If triptans doesn’t work
Try another , consider nasal or injectable if needed
What is the DHA protocol
Metoclopromide or prochlopereazine 10 mg IV over 60 sec. wait 5 min to allow distribution
Give DHE .5 mg IV over 60 sec wait 3-5 min
May repeat .5 mg IV if no relief every 8 hours for short term use
Contraindications DHE
Same as triptans
Side effects HE
Chest pressure, anxiety, speeding or dissociation of thoughts, nausea
If nausea/vomiting are a major feature of migraine, consider using a ____
Antimemtic like metoclopramide, prochloperazine
If insomnia is a major feature of migraine, consider a ____ or ___ to help patient sleep off migraine
Sedative-diazepam, temazepam
Tranquilizer-thorazine
A __ __ can sometimes be used to break the cycle of a prolonged migraine or several weeks of frequent migraines
Prednisone taper
What should you do if patient has one or more migraines a week
Preventative
Antidepressants to prevent migraines
TCA (amitriptyline, nortriptyline)
SSRI (fluoxetine, sertaline, escitalopram)
MAOI (phenelzine)
Beta blockers (propranolol)
Calcium channel blockers (verapamil)
Anticonvulsants (topiramate, valproic acid, gabapentin)
Ergot alkaloids (ergotomine+phenobarbital)
NSAIDS (ASA, naproxen)
Muscle relaxants (tizanidine)
Methysergide (sansert)
Botox injection
For chronic migraine
155 units into 31 sisters repeated 3 months
Need multiple treatments over 9-12 months to work
minimal side effects
Non prescription treatment of migraine
Exercise, stop smoking, HA education, riboflavin, mg, biofeedback/relaxation/stress management
What is one of the best preventative treatments of migraine and tension type HA
Stress management/relaxation/biofeedback
Acute treat of tension headache
OTC analgesics
NSAIDS
Opoids
Midbrain
Acute treat of tension HA
OTC analgesics
NSAIDs
Opoids
Midrin
Preventative treat for tension HA
Antidepressents -Tca, SSRI, MAOI Muscle relaxant Anticonvulsants BOTOX injection Ergot alkaloids(DHE sometimes used to break cycle of chronic HA
Acute tc of cluster headache
DHE 1 mg IM or ergotamine 3 mg SL
Lidocaine 4% intranasal
Narcotics
Oxygen 6Lmin by mask
Sumatriptan 6 mg
Preventative treat for cluster headache
Calcium channel blocker Anticonvulsant Lithium Indomethacin Prednisone 10-14 days Ergotamine tartare
Trigeminal neuralgia
Excruciating sharp shooting electrical quality pain occurring in paroxysms in one or more distributions of the trigeminal nerve often frequent throughout the day.
Treat trigeminal neuralgia
Carbamazepine or oxcarbamazepine
Other anticonvulsants or surgery
Trigeminal autonomic cephalgias TAC
Group of headache disorders characterized by unilateral trigeminal distribution pain that occurs in association with prominent ipsilateral cranial autonomic features
What does TAC include
Cluster HA Paroxysmal hemicrania Hemicrania continua SUNCT syndrome SUNA syndrome
SUNCT syndrome
Short lasting, unilateral, neuralgiform headache attacks with conjunctival injection and tearing
Symptoms SUNCT
Excruciating, burning, stabbing electrical HA in periorbital area lasting seconds to a few minutes, occurring frequently throughout the day
Onset over 50 in men
Treat SUNCT
Anticonvulsants
LAMOTRIGINE
Paroxysmal hemicrania
Very similar to cluster headache (unilateral, periorbital, severe, excruciating, often with lacrimation, conjunctival irritation) but shorter duration (few minutes) and increased frequency (over 5 a day)
Treat paroxysmal hemicrania
Indomethacin
MS
Disorder of the brain and spinal cord characterized by a tendency for periods of increasing and decreasing symptoms and signs (exacerbation and remissions), which result from loss of nerve tract insulation (myelin) at multiple sites in the CNS
Common presentation of MS
Paresthesias Gait (transverse myelitis) Weakness Visual loss (optic neuritis) Urinary difficulty Dysarthria Hemiparesis
Four types of MS
Relapsing remitting (45-50%) Secondary progressive (20-25%) Primary progressive (15-20%) Benign (20-15%
What is secondary progressive MS
Begin their disease process in the relapsing remitting category-includes some patients that still have occasional relapses (relapsing progressive
When is MS diagnosed
20s-30s
Characterization MS
Exacerbation and remission
Diagnose MS
No single test, multiple studies can help
Cause of MS
Unknown
Genetic, immune to CNS myelin triggers(virus and stuff)
Women or men MS
Women, but women more favorable course
With MS early onset is a more __ prognosis
Favorable
Tropical or temporal zones MS
Temperate
How diagnose MS
MRI of head, and C T spine
-ovoid lesions on T2W1 in periventricular white matter and in spinal cord
Multimodality evoked potentials (SSEPs, VEP, BAER
- LP
- oligoclonal bands and/or increased IgG index/synthesis rate are the typical findings in MS
Drugs for MS maintence
Avonex, rebif Betaseron Cop a one Tysabri Gilenya Tecfidera Lemtrada Zinbryta Ocrevus
What is used t treat primary progressive MS in addition to relapsing forms of the disease
Ocrevus
How treat acute exacerbation in MS
High dose corticosteroids (methylprednisone-1 gram IV daily for 305 days followed by oral prednisone taper)-this reduces length of exacerbation but is not thought to change the voverall outcome of it
ACTH IVIg can be used on occasion, particularly in patients who do not tolerate traditional steroid treatment
CLinically Isolated SYndrome
A disease course of MS that can be monofocal or multifocal
Monofocal episode of clinically isolated syndrome
Person experiences a single neurologic sign or symptom that’s caused by a single lesion (optic neuritis in one eye)
Multifocal episode of clinically isolated syndrome/acute disseminated encephalomyelitis
More than one sign or symptom caused by lesions in more than one place (optic neuritis in one eye plus hemiparesis)
When do CIS patients have a high risk of developing MS
Multiple demyelinating lesions on MRI,
60-80% chance of developing in several years
When do CIS patients have a low risk of developing MS
Do not have multiple demyelinating lesions on MRI, have about a 20% chance of developing MS within several years
What disease may mimic MS
Autoimmune disease-SLE with cerebritis or CNS vasculitis or polyarteritis nodosa with transverse myelitis -Devics disease (neuromyelitis optica) -b12 defiency -lymphoma or leukemia within CNS -spinocerebellum ataxia -vascular malformations Infections Granulomatous disease-sarcoidosis -metachromatic leukodystrophy, adrenomyeloleukodystrophy
How manage spasticity of MS
Baclofen, tizanidine, diazepam, carbamazepine, Botox, dantrolene
How manage intention tremor
Propranolol, primidone, clonazepam
How manage urinary urgency
Oxybutinin
Destroy LA
How manage urinary retention/hesitancy
Bethanechol
Howmanage painful dysesthesias
Carbamazepine Oxcarbazepine Gabapentin Phenytoin Baclofen
How manage fatigue
Amantadine, modafinil, armodafinil, buproprion, methylphenidate, pemoline, exercise
Cure for MS
No
Devics disease/neuromyelitis optica
Variant of MS, but probably a different entity
Inflammation, demyelination of optic nerves and spinal cord
Spare brain
Yeast for aquaporin 4 antibodies
-
How treat devics
Steroids, plasma exchange, followed by immunosuppression (azothiaprine, mycophenolate, mofetil, rituxumab)
What is paroxysmal disorders
Episodic!
-migraines, syncope, dizziness, seizure, transient global amnesia
Epilepsy
2 or more unprovoked seizures
4th most common neurological disorder
1/26 ppl will develop
Prejudice of epilepsy
Possessed by demons
Contagious
Up until 1965 illegal for epilepsy patients to marry in 17 states
Last state abolish in 1980
Can deny them in restaurants, theaters, and other public places until 1970s
Underemployment
Stopped in 1990 with American Disability act
% positive findings for epilepsy on a single EEG
All types 40% Generalized tonic closure 20% Petit mal (with HV) 90%
Percent positive for epilepsy (al types) with 3 sleep-deprived EEG is __
85%
A normal EEG does not exclude the presence of ___
Epilepsy
Minor abnormalities on an EEG do not necessarily indicate a patient will have __
Seizures
Partial seizure (on one side of brain)
Simple partial
Complex partial
Secondarily generalized (partial onset)
Generalized seizures
Absence (petit mal) Tonic clinic Myoclonic Tonic Clinic Atonic Clinic tonic clonic
Dimple partial seizure
Focal motor or sensory activity, no LOC, lasts seconds, no post octal state
Complex partial seizures
Non responsive staring, possible preceding aura, automatism, LOC, lasts 102 min, post-vital state
Characteristics of secondary generalized seizures
Bilateral tonic clonic activity, LOC, lasts 1-3 min, post entail state
Absence generalized seizures
Non responsive staring, rapid blinking, chewing, clonic hand motions, LOC, lasts 10-30 sec, no post octal state